As another example of Facebook's 'expert fact checkers', here's the letter recently written to Mark Zuckerberg by the editor in chief and others of the British

As another example of Facebook's 'expert fact checkers', here's the letter recently written to Mark Zuckerberg by the editor in chief and others of the British Medical Journal - which is, as they say, one of the world’s oldest and most influential general medical journals. https://www.bmj.com/content/375/bmj.n2635/rr-80 https://www.bmj.com/content/375/bmj.n2635/rr-80